Garment fastener and closing system testing

Garment fastener and closing system testing involves evaluating the performance and durability of various closure mechanisms like zippers, buttons, snaps, and hook-and-loop fasteners. These tests assess strength, resistance to opening, and overall functionality under different conditions, ensuring the garment's closure system will perform as expected during use. 

Types of Fasteners and Closing Systems:

Zippers: Tested for tensile strength, slider functionality, and attachment strength of the zipper elements. 

Buttons: Evaluated for attachment strength, resistance to pull-off, and durability. 

Snaps: Tested for resistance to unsnapping, attachment strength, and durability. 

Hook-and-loop fasteners (Velcro): Evaluated for peel strength, shear strength, and resistance to repeated opening and closing. 

Other closures: Belts, buckles, and other specialized closures are also subject to testing. 

Common Testing Methods:

Tensile testing: Measures the force required to break or detach a fastener. 

Peel testing: Measures the force required to separate a hook-and-loop fastener. 

Shear testing: Measures the force required to slide or disengage a fastener. 

Fatigue testing: Simulates repeated opening and closing cycles to assess durability. 

Torque testing: Measures the force required to twist or rotate a fastener. 

Impact testing: Assesses the fastener's resistance to sudden impacts. 

Snap fastener testing: Specifically tests the force required to disengage snap fasteners. 

Needle detection: Assesses the presence of metal fragments (like broken needles) in garments.